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# minimumFocusDistance

The capture device’s minimum focus distance in millimeters.

```
var minimumFocusDistance: Int { get }
```

## Discussion

For virtual cameras, like [`builtInDualCamera`](/documentation/AVFoundation/AVCaptureDevice/DeviceType-swift.struct/builtInDualCamera) or [`builtInTripleCamera`](/documentation/AVFoundation/AVCaptureDevice/DeviceType-swift.struct/builtInTripleCamera), this value represents the smallest minimum focus distance of the autofocus-capable cameras that it sources.

This value is `-1` if the distance is unknown.

---

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